• After-sales Service
• Fault Analysis
• Download

Handtop digital provides professional and close technical advisory services, including full range of products consulting and technical advices,services,etc..

Please fill in the information, we will reply you within 36 hours.

News Information
• Notice about the postponement of FESPA 2020
• FESPA 2020 is coming!We bring high-end UV printers to you
• Notice: APPPEXPO 2020 Has Been Postponed
• Announcement on Postponing DPES Sign Expo China 2020
• The first show for HT2512UV FR9 at DPES 2020
Fault Analysis
HOME > SUPPORT > Fault Analysis

Q:Vacuum Pump Buzzer alarm 1 Beep.

Reason:The main vacuum pump is damaged or negative pressure is adjusted too low or negative pressure meter parameters are modified.

Settlement:Replace the main vacuum pump or increase negative pressure or reset the parameters of negative pressure meter and reboot ink system.

Q:Vacuum Pump Buzzer alarm 2 Beep.

Reason:Negative pressure overrate.

Settlement:Adjust the negative pressure to the normal range of -3.8 or so(Vary in different areas).

Q:Ink Pump Buzzer alarm 3 Beep.

Reason:Ink supply timeout.

Settlement:Settlement: Check the ink tank, if the ink is empty, fill it, otherwise there may be ink pump damage or leak .

Q:Communication Cable/Circuit Board Buzzer alarm 4 Beep.

Reason:Communication failure between external device control board and head board.

Settlement:Check the communication cable or replace the head board or external device control board.

Q:Communication Cable/Circuit Board Buzzer alarm 5 Beep.

Reason:The ink flows into the negative pressure box.

Settlement:Check if the negative pressure too high or the liquid sensor malfunctioned, clean or replace the air pipe, replace the ink pressure valve if infiltrated.

Q:Communication Cable/Circuit Board Buzzer alarm 6 Beep.

Reason:Ink tank staving.

Settlement:Locate the color and refill.

Q:UV lamp automatically extinguished, or the ink can not be cured while the light is unstable.

Reason:Filter cotton too dirty or the voltage is unstable or the lamp lifetime is over.

Settlement:Replace the filter cotton or check the power supply or change the lamp.

Q:UV Lamp Shutter The lamp shutter jammed causing the switch failure.

Reason:High temperature expansion jam.

Settlement:Check the causing of jamming and make mechanical modification.

Q:Two magnitudes rocker switch UV lights or fans can not open, joint burnt black.

Reason:Large current operation.

Settlement:Replace the rocker switch, ensure the connections are solid when replacing.

Q:¢4X2.4 Ink tube The negative pressure decrease and fluctuate when carriage running or the ink tube inside the chain leaks.

Reason:Crushed by the high-speed running of the chain.

Settlement:Replace the ink tube.

Q:External device control board, Error:"Communication with peripheral unit control board is failed!"

Reason:Computer case ungrounded, hot plugging communication cable or frequent shutdown.

Settlement:Replace the external device control board, make sure the machine and computer is off when operating the communication cable, at least 30 seconds between each on/off, solid grounding of the computer case is necessary.

Q:Photoelectric switch on the left base point Can't return to the base point on the left guide trail, photoelectric switch light keep lighting.

Reason:Origin switch is stained with ink, the light is blocked.

Settlement:Wipe clean with alcohol or replace.

Q:Computer crash, all software unavailable.


Settlement:Anti-Virus, or record parameters of color registration, temperature and voltage, then reinstall the computer and software.

Q:Guide rail beam end cover Abnormal sound in the guide rail beam end cover.


Settlement:Adjust the tightness of the fixed screw.

Q:Almost every nozzle on the black ink print head presents serious inclined jet.

Reason:Black ink print head surface is easy to be cured.

Settlement:Use clean cloth with cleaner to clean the nozzle surface repeatedly until it's normal again.

Q:Negative pressure regulating valve The negative pressure is not stable, and sometimes automatically becomes higher or lower and cause dropping.

Reason:The dust in negative pressure control valve affected the air flow.

Settlement:Clean the negative pressure control valve every month.

Q:Data Transfer Card Error:"Can not find Data Transfer Card in the computer!\n".

Reason:The data transfer card is not plugged in or the driver is not installed correctly or the gold finger is dirty.

Settlement:Reinsert data transfer card or reinstall the driver or clean the gold finger.

Live chat now.

Thanks for your recognition, for better service, please provide below information.